Extract search box as a separate control + clear box on ESC + filter by contains() instead of regexp

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Handle case when after a delete store remains empty

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Remove old GridFilterBox

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Fix search delay cfg property and description

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge remote-tracking branch 'origin/master' into split-grid-search-box
Merge remote-tracking branch 'origin/master' into split-grid-search-box
Merge pull request #168 from sonatype/split-grid-search-box

REVIEW: Search/Filter box improvements